Home / 727,418.80-1,003,798.87-400,721.10

Finding the Fourth Proportional to 727,418.80, 1,003,798.87 and 400,721.10

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Solution

The fourth proportional to 727,418.80, 1,003,798.87 and 400,721.10 is: 552,973.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,418.80 : 1,003,798.87 = 400,721.10 : x
  2. Step 2: Convert to fraction form
    727,418.80/1,003,798.87 = 400,721.10/x
  3. Step 3: Cross multiply
    727,418.80x = 1,003,798.87 × 400,721.10
  4. Step 4: Simplify right side
    727,418.80x = 402,243,387,365.16
  5. Step 5: Solve for x
    x = 402,243,387,365.16/727,418.80
  6. Step 6: Final answer
    x = 552,973.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.